﻿// The MIT License (MIT)
// 
// Copyright (c) 2015-2018 Rasmus Mikkelsen
// Copyright (c) 2015-2018 eBay Software Foundation
// https://github.com/eventflow/EventFlow
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

using System;
using System.Collections.Generic;
using EventFlow.ValueObjects;

namespace EventFlow.Core
{
    public class Retry : ValueObject
    {
        public static Retry Yes { get; } = new Retry(true, TimeSpan.Zero);
        public static Retry YesAfter(TimeSpan retryAfter) => new Retry(true, retryAfter);
        public static Retry No { get; } = new Retry(false, TimeSpan.Zero);

        public bool ShouldBeRetried { get; }
        public TimeSpan RetryAfter { get; }

        private Retry(bool shouldBeRetried, TimeSpan retryAfter)
        {
            if (retryAfter != TimeSpan.Zero && retryAfter != retryAfter.Duration())
                throw new ArgumentOutOfRangeException(nameof(retryAfter));
            if (!shouldBeRetried && retryAfter != TimeSpan.Zero)
                throw new ArgumentException("Invalid combination. Should not be retried and retry after set");

            ShouldBeRetried = shouldBeRetried;
            RetryAfter = retryAfter;
        }

        protected override IEnumerable<object> GetEqualityComponents()
        {
            yield return ShouldBeRetried;
            yield return RetryAfter;
        }
    }
}